The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work reveals the intrinsic carrier transport behavior of 2D organolead halide perovskites based on phase‐pure homologous (n = 1, 2, and 3) Ruddelsden–Popper perovskite (RPP) (BA)2(MA)n−1PbnI3n+1 single crystals. The 2D perovskite field effect transistors with high‐quality exfoliated 2D perovskite bulk crystals are fabricated, and characteristic output and transfer curves are measured from individual...
Hydrogel structures equipped with internal microchannels offer more in vivo‐relevant models for construction of tissues and organs in vitro. However, currently used microfabrication methods of constructing microfluidic devices are not suitable for the handling of hydrogel. This study presents a novel method of fabricating hydrogel‐based microfluidic chips by combining the casting and bonding processes...
Cu nanocrystals of various shapes are synthesized via a universal, eco‐friendly, and facile colloidal method on Al substrates using hexadecylamine (HDA) as a capping agent and glucose as a reductant. By tuning the concentration of the capping agent, hierarchical 3D Cu nanocrystals show pronounced surface‐enhanced Raman scattering (SERS) through the concentrated hot spots at the sharp tips and gaps...
Phase‐engineered type‐II metal–selenide heterostructures are demonstrated by directly selenizing indium‐tin oxide to form multimetal selenides in a single step. The utilization of a plasma system to assist the selenization facilitates a low‐temperature process, which results in large‐area films with high uniformity. Compared to single‐metal–selenide‐based photodetectors, the multimetal–selenide photodetectors...
The formation of PtSe2‐layered films is reported in a large area by the direct plasma‐assisted selenization of Pt films at a low temperature, where temperatures, as low as 100 °C at the applied plasma power of 400 W can be achieved. As the thickness of the Pt film exceeds 5 nm, the PtSe2‐layered film (five monolayers) exhibits a metallic behavior. A clear p‐type semiconducting behavior of the PtSe...
Carbon‐based nanocomposites have shown promising results in replacing commercial Pt/C as high‐performance, low cost, nonprecious metal‐based oxygen reduction reaction (ORR) catalysts. Developing unique nanostructures of active components (e.g., metal oxides) and carbon materials is essential for their application in next generation electrode materials for fuel cells and metal–air batteries. Herein,...
Black phosphorus nanobelts are fabricated with a one‐step solid–liquid–solid reaction method under ambient pressure, where red phosphorus is used as the precursor instead of white phosphorus. The thickness of the as‐fabricated nanobelts ranges from micrometers to tens of nanometers as studied by scanning electron microscopy. Energy dispersive X‐ray spectroscopy and X‐ray diffraction indicate that...
Photodynamic therapy (PDT) based on photosensitizers (PSs) constructed with nanomaterials has become popular in cancer treatment, especially oral carcinoma cell. This therapy is characterized by improved PS accumulation in tumor regions and generation of reactive oxygen species (ROS) for PDT under specific excitation. In the selection of near‐infrared (NIR) window, 808 nm NIR light because it can...
In article number 1700038, Michael Hsiao, Ru‐Shi Liu, and co‐workers, report an 808 nm near‐infrared‐triggered photodynamic therapy (PDT) strategy using upconversion nanoparticle‐poly‐l‐lysine@graphitic carbon nitride quantum dots (UCNP‐PLL@CNs) nanocomposites. The 808 nm UCNP‐PLL@CNs are expected to make PDT more humane, controllable, and low‐cost, which will inevitably lead to considerable improvements...
Control of the precise lattice alignment of monolayer molybdenum disulfide (MoS2) on hexagonal boron nitride (h‐BN) is important for both fundamental and applied studies of this heterostructure but remains elusive. The growth of precisely aligned MoS2 domains on the basal plane of h‐BN by a low‐pressure chemical vapor deposition technique is reported. Only relative rotation angles of 0° or 60° between...
Cyclo(Arg‐Gly‐Asp) peptide (cRGD) decorated disulfide (SS) containing poly(vinyl alcohol) nanogels (cRGD‐SS‐NGs) with an average diameter of 142 nm prepared by inverse nanoprecipitation, “click” reaction, and cRGD conjugation are developed for targeted treatment of integrin overexpressing human glioblastoma in vivo. Doxorubicin (DOX) release from cRGD‐SS‐NGs is highly inhibited under physiological...
Phenazines exhibit intriguing vibration‐induced emission (VIE) owing to the fast intrinsic vibration of benzo[a,c]phenazine moiety. For the first time, a phenazine‐based ratiometric fluorescent probe DBPST is developed for recognizing Hg2+ via restriction of VIE. Upon binding with Hg2+, DBPST demonstrates two well‐resolved emission peaks (over 130 nm) with a wide tuning color and affords a large...
The X‐ray photoelectron spectroscopy spectra indicate the peak of BB bonds, implying that the elemental boron structure might be formed after the process. The multilayer β‐borophene is directly observed by transmission electron microscopy (TEM) and the lattice parameters are valid. The middle SiNx layer also can be identified in TEM image. Furthermore, the 1.61 eV bandgap of the multilayer β‐borophene...
Wearable sensors for the detection of human activities including subtle physiological signals and large‐scale body motion as well as distinguishing the motion direction are highly desirable, but still a challenge. A flexible wearable piezoionic strain sensor based on the ionic polymer membrane sandwiched between two conductive electrodes is developed. This ionic polymer sensor can generate electrical...
A novel electrochemical actuator based on polyaniline@vertically aligned carbon nanotube nanocomposite electrodes, in which the vertically aligned structure is introduced by a facilely electrochemical process. Owing to the vertically aligned nanocomposite electrode providing ordered path channel for faster ion transportation and high electrochemical capacitance for more ion accumulation, our actuator...
A novel self‐powered photodetector based on reduced graphene oxide (rGO)/n‐Si p‐n vertical heterojunction with high sensitivity and fast response time is presented. The photodetector contains a p‐n vertical heterojunction between a drop‐casted rGO thin film and n‐Si. Contacts between the semiconductor layer (rGO, n‐Si) and source–drain Ti/Au electrodes allow efficient transfer of photogenerated charge...
MoS2 nanoscrolls are formed by argon plasma treatment on monolayer MoS2 sheet. The nanoscale scroll formation is attributed to the partial removal of top sulfur layer in MoS2 during the argon plasma treatment process. This convenient, solvent‐free, and high‐yielding nanoscroll formation technique is also feasible for other 2D transition metal dichalcogenides.
A high‐sensitivity and low‐power theranostic nanosystem that combines with synergistic photothermal therapy and surface‐enhanced Raman scattering (SERS) mapping is constructed by mesoporous silica self‐assembly on the reduced graphene oxide (rGO) nanosheets with nanogap‐aligned gold nanoparticles (AuNPs) encapsulated and arranged inside the nanochannels of the mesoporous silica layer. Rhodamine 6G...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.